Introduction Oscar E Jarquin Chief Office of Information

Introduction Oscar E. Jarquin Chief, Office of Information Technology California Department of Transportation (Caltrans) Los Angeles, California, USA • • • Civil Engineer Land Surveyor GIS Professional Project Manager Program Manager

Presentation Goals • Information Lifecycle – Why? . . . Data Driven Decision Making – How? … Data →Information →Knowledge • Visual Interface – The Human Element – Strength – Weakness • Primary Key to Infrastructure Data • Linear Referencing Systems • Enterprise Architecture

Geospatial Technology. . . a conceptual definition • Computer Aided Design & Drafting (CADD) • Geographical Information Systems (GIS) • Global Positioning System (GPS) • Computer Aided Dispatching (CAD) • Automated Mapping / Facility Management

Information Lifecycle Automobile ID Real World Co Data Balanc Color s e t 50067 Ford 11 3 Blue 8994 Abstract Make Ford 16 2 Blac k 90055 Decision Representation Knowledge GMC Fiat 15 0 Integrate 43389 12 0 Blac k Blue Information

1 Data

2 Data

3 Data ?

Information to Knowledge

. . . a working definition A computer system consisting of hardware and software that utilizes relational database technology and a topological data structure to allow the integration of raster and vector spatial data with tabular information for display, edit, query, analysis, combination, creation, maintenance, and management of geographic data sets in an environment that is customizable to meet the application needs of the users forming a powerful network of information that facilitates the sharing of data for better decision-making.

GIS Organization

Spatial Key/Relationship Reference Systems Cartesian Coordinates (3, 2) 5 0 3. 6 (0, 0) (GPS) Latitude & Longitude projected to Cartesian Coordinate System

Data/System Integration Starbucks Locations - LRS Address Cell Location - GPS Store ID …. X Y Name …. 101 Main St 4566 …. 3 2 Rebecca …. 555 Baer Av 6889 …. 5 9 Justin …. 319 3 rd St 4993 …. 135 406 Jonathan …. + Relate Spatial Key Baer Av Starbucks – XY View Address Store ID X Y 101 Main St 4566 9 -2 555 Baer Av 6889 0 0 319 3 rd St 4993 6 7 Calculate 3 rd St Main St

Linear Referencing 4 3 5 2 1 Y M 1 • “Calibration” • “M-Enabled” • Automatic Methods X 0 0 0 2 1000 3 3 3 2000 4 4 4 2900 5 6 3 3700

What is Linear Referencing? Introduction What is LR? Why use LR? How to use Example Considerations Find More Conclusion “Linear Feature” An Example “Distance Along” “I’m at mile marker 66 on State Highway 112. ”

Considerations • Routes and Route Events can not exist independently. – Edits on one may affect the other. 604. 0 0. 0 Route AAA Route A 614. 0 10. 0

How to use… • Events Accidents Route Detail 90 103. 6 6/12/08 fatality 112 66. 0 9/2/06 guardrail damage Main Point Events Measure 42. 42 10/5/07 injury Road Surface Route From M To M Detail 90 0 1000 asphalt 90 1000 1260 concrete 11 608 784 dirt Main 45 108 asphalt Line Events

Why Use Linear Referencing? asphalt concrete Surface none $1 M CIP 45 30 35 Speeds 2 4 Lanes Road segment

Multiple LRM’s County ORA Route Postmile 405 R 23. 000 Route Kilo. Post 405 R 33. 877

California Business Driver… Corridor Management

Service Oriented Architecture (SOA) Applications Other GIS St. Hwy Inv. HPMS CTIS Parcels PEAR Envir. TIMI Asset Mgt Security Linear Referencing Mapping Others Doc Mgt Other Functions SHARED FUNCTIONS Search Functions CAD Others Locals Google Earth Public SOA (Service Oriented Architecture) State Agencies Internet Data Files SOA output via GIS = Planning, PID, Design, Proj. Mgt. , Constr. , Operations, etc. for system performance, geometrics, etc. Java/XML Message Bus PMS TASAS TMCs (loops, CMS, etc. ) Main Frame HPMS Hwy. Inven. Web Pages Traffic Volume Programming Other TSM OE-PSE CT PASS External Sources

Identifying Common SOA Components

Geospatial Data Management Google Earth GIS Files Cadastral CADD Post Mile Info Web Geospatial Data GIS Micro. Station Geodatabase / Web Services

Postmile Lookup Tool

Arc. GIS Tool Bar

GPS Satellites The GPS Operational Constellation consists of 24 satellites that orbit the Earth in very precise orbits twice a day. GPS satellites emit continuous navigation signals.

Receivers and Satellites GPS units are made to communicate with GPS satellites (which have a much better view of the Earth) to find out exactly where they are on the global scale of things.

Time Difference The GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is.

3 -D Trilateration 1 Satellite 3 Satellites 2 Satellites